Invention Grant
- Patent Title: Pulse width modulation method for a power converter
- Patent Title (中): 功率转换器的脉宽调制方法
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Application No.: US12246174Application Date: 2008-10-06
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Publication No.: US07920395B2Publication Date: 2011-04-05
- Inventor: Seiji Ishida , Atsuhiko Nakamura
- Applicant: Seiji Ishida , Atsuhiko Nakamura
- Applicant Address: JP Tokyo JP Chiba-shi
- Assignee: Hitachi, Ltd.,Hitachi Industrial Equipment Systems Co., Ltd.
- Current Assignee: Hitachi, Ltd.,Hitachi Industrial Equipment Systems Co., Ltd.
- Current Assignee Address: JP Tokyo JP Chiba-shi
- Agency: Crowell & Moring LLP
- Priority: JP2002-368421 20021219
- Main IPC: H02M7/521
- IPC: H02M7/521 ; H02M5/42
Abstract:
A pulse width modulation method has the steps of operating a second instruction signal so that each of the differences between two or three arbitrary instruction signals in three first instruction signals may become more than the predetermined value, and modulating in pulse width based on the second instruction signal.
Public/Granted literature
- US20090040797A1 Pulse Width Modulation Method for a Power Converter Public/Granted day:2009-02-12
Information query
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